Science Olympiad Model Test Paper - 1 | Science Olympiad for Class 3 PDF Download

Ans: (c)
A cow has 4 legs and a horse has also 4 legs.
Number of cows = 2
Number of legs of 2 cows = 4 + 4 = 8
Number of horses = 2
Number of legs of 2 horses = 4 + 4 = 8
Total number of legs = 8 + 8 = 16

Ans: (a)
Strawberry 5 is the third strawberry to the right of eighth strawberry from right end.

Ans: (a)
The given numbers are arranged in descending order,

Ans: (d)
The arrangement of four students according to their marks is as follows:
Neha > Gunjan > Sapna > Kanak
So, Kanak scored lowest marks among them.

Ans: (d)
Red Fort is situated in Delhi and Delhi is called Agra. So, Red Fort is situated in Agra.

Ans: (b)
Canning is done to preserve food by storing them in salt or sugar syrup. Frying, Steaming and Roasting are methods to cook food.

Ans: (a)
Apple is the source for almost all the components of food.

Ans: (c)

• Mustard Onion have different types of roots: Mustard has a taproot while Onion has a fibrous root.
• Turnip 
• To maintain the relationship, we need a plant that has a fibrous root like Onion.
•  Sugarcane is known for its fibrous root system, making it the correct choice for X.

Ans: (d)

• This experiment illustrates that air is necessary for burning. When the candle is covered, it consumes the oxygen inside the jar.
• As the oxygen depletes, the candle cannot sustain the flame and goes out.
• This shows that without air, specifically oxygen, fire cannot continue to burn.
• Thus, air plays a crucial role in the process of combustion.

Ans: (b)

• The letters "GALEE" can be rearranged to spell "EAGLE," which is a bird recognized for its strong talons.
• Talons are sharp claws that help birds of prey, like eagles, catch and hold onto their prey.
• The other options do not form the name of a bird with talons when unscrambled.
• Thus, the correct answer is (b) GALEE, which represents the eagle.

Ans: (d)
Coriander seeds are added to vegetables to give them a different taste and fragrance.

Ans: (c)

• Man-made fibers are known as synthetic fibers because they are created using chemicals rather than natural materials.
• These fibers are produced through various chemical processes, allowing for a wide range of properties and uses.
• Unlike natural fibers like wool or jute, synthetic fibers can be engineered for specific applications.
• Examples of synthetic fibers include polyester and nylon, which are widely used in clothing and textiles.

Ans: (c)
Talons are useful for grasping the prey and take long and high flights

Ans: (c)
The meals during half-day of the school timing, called mid-day meals are provided by government to promote education among socially and economically backward classes.

Ans: (c)
We get fruits, vegetables, cereals and pulses from plants and we get meat and eggs from animals.

Ans: (c)
Honey is the only food item that does not spoil with passage of time.

Ans: (b)

• The skeletal system is crucial for providing structure to the body.
• It enables movement by working with muscles.
• Additionally, it protects vital soft organs, such as the heart and lungs.
• Other systems like the nervous and circulatory systems have different functions and do not primarily focus on movement and protection.

Ans: (a)

• Jet plane is primarily used for air travel, while the others are ground vehicles.
• Auto-rickshaw, Car, and Train all operate on roads or tracks.
• This makes the Jet plane distinct in terms of its mode of transport.
• Thus, it is the odd one out in this list.

Ans: (a)
Animals like deer, zebra, etc. are herbivores.

Ans: (d)
Milk consist of calcium and phosphorus which are main components of bone.

Ans: (a)
Hummingbird is the smallest bird and the only bird that can fly backwards

Ans: (b)

• Food intake process: The journey of food starts when we eat it through the mouth.
• Next, it travels down the oesophagus to reach the stomach, where it is broken down.
• After the stomach, food moves into the small intestine for nutrient absorption, then into the large intestine.
• Finally, waste is expelled from the body through the anus.

Ans: (b)
Pelican and Flamingo do not live on trees and kingfisher lives in coastal areas.

Ans: (d)

• Covering the mouth while yawning is a good habit as it shows respect for others and helps prevent the spread of germs.
• In contrast, options like biting nails, spitting on the road, and throwing garbage are negative behaviors that can be harmful or disrespectful.
• Practicing good habits like covering your mouth is important for maintaining hygiene and social etiquette.
• Overall, good habits contribute to a healthier and more considerate community.

Ans: (a)

• Sound can travel through solids and liquids, but it can also travel through gases. This statement is incorrect because sound actually travels through all three states of matter, although it travels fastest in solids.
• Echoes are indeed used to measure the depth of the sea, which is a correct statement.
• It is true that light travels faster than sound, making this statement correct as well.
• Sound is produced by vibrations, which is also a correct statement.

Ans: (a)

• Creepers are plants that grow along the ground and spread out horizontally.
• Among the options, Muskmelon is known for its creeping growth habit.
• In contrast, Grapevine grows vertically, Banana is an upright plant, and Sunflower stands tall.
• Thus, the correct answer is Muskmelon, as it fits the definition of a creeper.

Ans: (a)
Carbohydrates are the main source of energy in foods.

Ans: (d)
P consumes plant and consumer Q. U consumes plants and consumer T. So, both of them are omnivores

Ans: (c)
We must consume more of fruits and vegetables as compared to rice and cereals.

Ans: (d)

• Pucca houses are constructed using durable materials that provide strength and stability.
• Common materials include bricks, cement, and iron rods, which are essential for building.
• Mud is typically associated with kacha houses, which are less permanent and made from natural materials.
• Thus, the correct answer is (d) Mud, as it is not used in the construction of pucca houses.

Ans: (a)
Cereals, sugar and potatoes are rich source of carbohydrates; butter, cheese and oil add fats to the body; milk, eggs and pulses are rich sources of proteins; fruits, vegetables, milk and eggs provide necessary vitamins and minerals to us.

Ans: (a) 
Food chain shows how living things depend on each other for food and how energy moves from one living thing to another

Ans: (c)
There are only four food chains in this food web. The plants (W) are being consumed by four different organisms.

Ans: (b)
Spices are added in small quantities in food items to give aroma, flavour and colour to the dishes.

Ans: (d)
Acid rain destroys metal products and causes harmful skin diseases to animals and destroys plants.